local mfl, mce = math.floor, math.ceil
local t = {6, 2, 5, 5, 4, 5, 6, 4, 7, 6}
local p, n = io.read():match("(%-?%d+) (%d+)")
if n == "0" then
  print(p)
  os.exit()
end
if 3 < #n then
  n = 1000
else
  n = tonumber(n)
end
local c = 0
if p:sub(1, 1) == "-" then
  c = 1
  p = p:sub(2, #p)
end
for i = 1, #p do
  local v = p:byte(i) - 48
  c = c + t[v + 1]
end
p = c
n = n - 1
for i = 1, n do
  if p == 0 then
    p = t[1]
  else
    local c = 0
    while 0 < p do
      local v = p % 10
      c = c + t[v + 1]
      p = mfl(p / 10)
    end
    p = c
  end
end
print(p)